Casting-machine.



I. KRALUND.

CASTING MACHINE.

APPLICATION nuau MAR. 19, ms.

cm 1 9 l4 In 2 W M m w W INVENTOR YATTORNEY hie. e j u we. lie. a i e i 'eeeie ieii. Eliey ilillllfi'e To all whom it may concc'm l it known time if, feels KCiCEALUNfi; e, citieen of the Unite iii-fies, i'eeiimg in ilie borough of iiireokiyii in tile city of New York county of" emi Eiieize oi? Iiiew York, have iiive heel certain new emi. use

{L l improvements in (.leeei'iiglilieciiiioee of which the following is a specification, 1

My invention relates to en impreveii coiistencils-n particularly spplicebie to die casting rm eciiimes, whereby a pivoted member mey be quickly and eeeiiy swung, by mem ally con'ii'elled power means, from e vertical position lo ahorizontel position and vice verse. My improvement is particularly designed {or use, in connection wiiii e die-cast ing machine in which the die mounted in e vertical position when the molten metal is forced therein and is then immeliietely swung into 1; horizontal position to feciliitzite the removal therefrom of the fluislieci oesting. {inch a member has heretofore been swung irom one posit/1011 ic the other by "Elie of singie eating elii' eg iinciee oe the cylinclei" being so suepemleei or mounted. that movement of the piston in islie some di rection serves to swing the pivoted. (iie Tom either extreme position to e meclieii geoei'tio i when the air OIL fluid pressure sug piy is shut oil. .The momenium the peri'e will carry the pivoteL member fiioin iie meiiien position to efhei' exiremeposillwii the pie" ton returning against {in air cushion or-meal by the air ireineining in the cylinder so time the pivoted. die member being moved will be brought to in ei'ehei' of its extreme positions, easily and without jar.

in order that my invention may "e more clearly modei'siemci attention is lieieby iii-ectecl to the eccoiiipenyine; elm m g; iorm- Ling part of ibis application and illusireiziiig one embodiment of my inveiit'i i. in the drawing the figure represents e Mole Hill-3V9,

' aosiiioii when eioii of e casting machine to which my i.m. provemenb is applieci, ifihe air cylinder being shown partly in section, end the meving iHgSilOV-Jil in aiciieol lines in e second poeiiion, i

ll to l ewi ig; the casting mew chine zeeiemfeol in ie iilueirelied. merely in owt ie since my iiieprovemem may be zip pl all Ilc' known ioriiie oi: casting machines. The machine is shown as having a bese poiizioi'i l, e portion e, iii which e melting pot is contained, and e stationery member i-leloove the letter on which the (Elie ijis mounted by means of a pivoiel connection illustrated et- 5. Nhen the die is in the vertical position shown in full lines, the casting is made by forcing molten metal upwardly "from the melting pot into the die, in Well known man ner. The die is then swung forwardly into the horizontal position shown in dotted lines to facilitate the unclemping of the die e'mi tile removal therefrom of the finished casting. The die is swung beck into the vertical the next casting is to be made and the same cycle of operations repeated...

The cylinder 8 is represented as pivoteily suspended. from the ceiling or other em. support *3 by any suit-aisle means such as the link. 8 having is opposite ends bent to (-incirele pin 9 carried by the cylinder end a eiepie l0 aeciiieci. to ihe ceiiing. The cylinder is open at its upper end and is proviieli vviili e suitable piston ll. having a rod. secured ihfilff-Jifll end. extending doWn- Werlii'y m ougggli & eui'leole eiuiiing box 13 Eli-i3 iiie lower of Lili; cylinder, liiie lower end of rod 3..2-

pivoiueliy connecmci to the holder of lie 4i. as indicated at 14:, preferably at an upper rear edge of the die or holder therefor. the of the die at which the same is pivoted to support 3 being ccnsid ererl lbhe forwei'li. edge.

Air, or other iiuicl under pressure, may be suppiieii to cyiitmier 6 between the under or Wei-king faee of piston and the lower Qilfi oi the cyliiiiici" ihicii is closed as indic .l at iii, k oi e suitable supply pipe iii and e .ble nsionthereof 171 valve 18 in the air supgilv pipe 16 may be governed by foot or hand lever euch as is incliceteii at 19,

the operation of the device, the casting iii-. ving been made when the die is in the posil'lio imliceieci, air is eviroiitecl to 'uiieici" eioe piston. 11 lay the were The air supply is shut off when the cylinder scribed is. accomplished by suspending. the

has approximately reached a median position between the'vertical and horizontal positions of the die, that is to say, when the cylinder crosses the line or plane extending through the pivotal point 5 of the die and the pivotal point 16 of the cylinder. The die will continue to swing forwardly under the influence of its momentum, the descent of the die to the dotted line position being cushioned by the return movement of the piston toward the lower end of the cylinder against the elastic resistance of the air which has been forced into the cylinder through c connections 16-17. The die will thus brought gently into the horizontal position indicated in which it may be suspended by the link formed by the cylinder and rod 12. When the die is to be returned to vertical position the air supply is again admitted in the same way to the lower end of the cylinder, the piston rising and causing the die to be swung toward the right. The air is again turned off when the cylinder crosses the median line, the die being returned to vertical position by the momentum attained, and being lowered gently into vertical position by the cushioning effect of the air underneath the piston in the same manner as described in connection'with the opposite movement. I

It will be observed that the efi'ect decylinder at such-a point, or mounting it in such a position, that movement of the piston in a single direction will serve to swing the cylinder and die to a median position after which the piston will move inthe opposite direction against an air or fluid pressure cushion.

It will be understood, however, that my invention is not limited strictly to the exact details of construction described, but that a reasonable range of equivalents is included, and the invention is as broad as is indicated by the accompanying claims.

What I claim is:

1. In a casting machine, the combination of a stationary member, a die pivoted thereto, and adapted to have a die-casting formed therein when in vertical position upon said stationary member, and means for swinging said die from said position to an horizonta position and vice-versa, comprising a fluid pressure cylinder open at its upper end, means pivotally supporting the upper end of said cylinder from an over head support, a piston in said cylinder, a rod extending from said piston through the lower end of said cylinder and pivotally secured to said die, and means for supplying fluid under pressure, as desired, within said cylinder below said piston, said cylinder being so positioned as to cross a line joining the pivotal supports of said cylinder and said die in swinging both to its vertical and horizontal positions. A

9.. In a casting machine, the combination of a stationary member, a member pivoted thereto, adapted to be swung from the vertical position to a fomvardly-directed position, and means for swinging said pivoted member from either position to the other, comprising a fluid pressure cylinder, having one end pivotally supported from a fixed support, a piston in said cylinder, a rod extending from said piston through the opposite end of said cylinder and pivotally secured to said pivot-ed member, and means for supplying fluid under pressure, as desired, within said cylinder on one side of said piston, said cylinder being so mounted that movement of said piston under fluid pressure, in the same direction, swings said pivoted member from either extreme position to a median position, past which it is carried by momentum.

3. In' a casting machine, the combination of a stationary member, a member pivoted thereto, adapted to be swung from the vertical position to a forwardly-directed position, and means for swinging said pivoted member from either position to'the other, comprising a fluid pressure cylinder, having-a piston therein and piston rod extending through one end of the cylinder, said cylin der and piston with its rod comprising c0- acting elements, one of said elements having one end pivotally supported from a fixed support, and the other of said elements having its opposite end pivotally secured to said pivoted member, and means for supplying fluid under pressure, as desired, within said cylinder, said elements and fluid supply means being so arranged that admission of fluid to said cylinder will swing said cylinder and pivoted member away from either extreme position toward the other.

This specification signed and witnessed this 14th day of March, 1918.

JOHN KRALUND, 

